Sandra Bullock, the Oscar-winning Hollywood star, pulled out of the London
premiere of her hit film The Blind Side as a US celebrity magazine published
a claim that her husband cheated on her.

Bullock 45, who won the Oscar for Best Actress last week, had been due in London to promote the drama.

But a statement issued by film studio Warner Bros said: “Due to unforeseen personal reasons a trip abroad to support The Blind Side has been deemed impossible at this time.

“I apologise for any inconvenience this may have caused and thank you for your continued support of the film.” The announcement came as In Touch magazine published an interview with a heavily tattooed model called Michelle “Bombshell” McGee, who claimed to have slept with Bullock’s husband while the actress was away in Atlanta filming The Blind Side last year.

After her Oscar win Mr James said: “Nobody deserves this more and works harder. I’m so proud of her.” If the claims of infidelity by her husband prove correct, Bullock will join a long list of actresses whose relationships have fallen apart shortly after they won an Oscar.

Recent previous winners afflicted by what has come to be known in Hollywoodas the “Oscar curse” for best actresses include Hilary Swank, Halle Berry, Reese Witherspoon and Julia Roberts.

British actress Kate Winslet, who won the Oscar last year for her role in the The Reader, announced on Monday that she and her film director husband, Sam Mendes, had separated.